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2021 GMC Sierra 1500 MPG

Based on data from 240 vehicles, 14,991 fuel-ups and 5,716,120 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.32 with a 0.09 MPG margin of error.

Below you can see a distribution of the fuel-ups with 78 outliers (0.52%) removed.

Following shows the average MPG of each of the 240 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • 2021 GMC Sierra AT4

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2024 • 49 Fuel-ups

    Property of banditz

  • 20.8 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2022 • 33 Fuel-ups

    Property of mnm6080

  • 22.9 Avg MPG
  • 21 Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2021 • 77 Fuel-ups

    Property of Corelax

  • 22.2 Avg MPG
  • '21 White AT4 DuraMax

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2020 • 132 Fuel-ups

    Property of APokowski

  • 20.6 Avg MPG
  • Dangmc

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2023 • 3 Fuel-ups

    Property of Dangmc

  • 23.0 Avg MPG
  • Sierra 1500

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Dec 2020 • 171 Fuel-ups

    Property of rdurbin

  • 15.5 Avg MPG
  • GMC

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Apr 2023 • 19 Fuel-ups

    Property of l1tech

  • 22.4 Avg MPG
  • 2021 Sierra 1500

    2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2021 • 149 Fuel-ups

    Property of Bost05

  • 14.5 Avg MPG
  • Family Hauler

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 63 Fuel-ups

    Property of 2013RAM2500

  • 23.7 Avg MPG
  • GMC Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Nov 2023 • 3 Fuel-ups

    Property of firemech

  • 35.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 62 Fuel-ups

    Property of dphi201

  • 23.4 Avg MPG
  • Bigfoot

    2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Mar 2022 • 75 Fuel-ups

    Property of White-Denali

  • 16.0 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3,0L L6 DIESEL Automatic 10 Speed
    Added Apr 2021 • 12 Fuel-ups

    Property of shadow_za

  • 23.4 Avg MPG
  • 3.0 AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Sep 2021 • 59 Fuel-ups

    Property of Timmy59360

  • 22.9 Avg MPG
  • Sierra

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jan 2022 • 72 Fuel-ups

    Property of jc9995

  • 25.5 Avg MPG
  • Denali

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Apr 2021 • 114 Fuel-ups

    Property of stagrlee

  • 19.0 Avg MPG
  • GMC

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Jan 2022 • 43 Fuel-ups

    Property of johnny91750

  • 25.9 Avg MPG
  • Thot Yacht

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jun 2021 • 73 Fuel-ups

    Property of TrevorBarrett

  • 23.7 Avg MPG
  • Sierra Duramax

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2022 • 26 Fuel-ups

    Property of BBJ1

  • 22.2 Avg MPG
  • Arnold

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Nov 2020 • 281 Fuel-ups

    Property of st333

  • 14.7 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Pay full attention, FOCUS! Avoid braking.

Watch 3 or 4 cars ahead of you, not the one right in front, ... ...

by tower0ne

Read more tips